Barstar

File:2hxx.png

Crystal Structure of Barstar 2hxx

Barstar (BST) is an inhibitor synthesized and secreted by the bacterium Bacillus amyloliquefaciens. It binds to the ribonuclease barnase (BA) very tightly and prevents it from digestion of the cell’s RNA.

3D Structures of Barstar3D Structures of Barstar

2hxx, 2cx6 – BST
1a19 – BST (mutant)
1l1k, 1bta, 1btb – BST – NMR
1ab7 - BST (mutant) - NMR

BST + BABST + BA

3da7 – BST + BA (mutant)
2za4, 1brs, 1bgs – BST + BA
1x1u, 1x1w, 1x1x, 1x1y, 1b27, 1b2u – BST (mutant) + BA
1b3s, 1b2s - BST (mutant) + BA (mutant)
1ay7 – BST + guanyl-specific RNase SA – Streptomyces aureofaciens